const User = require('../model/user.model')
class UserService{
    // 添加用户
    async createUser(user_name,password){
        const res =await User.create({user_name,password})
       // console.log(res) 
        return res.dataValues
    }
    // 获取用户信息
    async getUserInfo({id,user_name,password,is_admin}){
        const whereOpt ={}
        id && Object.assign(whereOpt,{id})
        user_name && Object.assign(whereOpt,{user_name})
        password && Object.assign(whereOpt,{password})
        is_admin && Object.assign(whereOpt,{is_admin})

       const res = await User.findOne({
            attributes:['id','user_name','password','is_admin'],
            where:whereOpt
        })
                
      return res ? res.dataValues : null
    }
    // 根据ID修改数据
    async updateDataById({id,user_name,password,is_admin}){
        const whereOpt ={id}
        const newUser={}
        user_name && Object.assign(newUser,{user_name})
        password && Object.assign(newUser,{password})
        is_admin && Object.assign(newUser,{is_admin})

        const res = await User.update(newUser,{where:whereOpt})
        console.log(res)

        return res[0]>0 ? true : false 
    }

}

module.exports = new UserService()